1-Ethyl-4-Isobutylbenzene

Name: 1-Ethyl-4-Isobutylbenzene
Brand: Vaqora Chemicals
SKU: VQ-031130

About 1-Ethyl-4-Isobutylbenzene

Vaqora Chemicals supplies 1-Ethyl-4-Isobutylbenzene, an impurity of Ibuprofen registered under CAS number 100319-40-2. The compound has the formula C12H18, corresponding to a molecular weight of 162.27 g/mol. Its systematic (IUPAC) name is 1-ethyl-4-(2-methylpropyl)benzene. Alternative names: p-Isobutylethylbenzene and Benzene, 1-ethyl-4-(2-methylpropyl)-.

It is supplied as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

As a characterised impurity of Ibuprofen, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. It is used across pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies 1-Ethyl-4-Isobutylbenzene in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Industries

Related to Ibuprofen

View every impurity, metabolite and intermediate we list for Ibuprofen.

Ibuprofen impurities

Specifications & identifiers

Chemical identifiers
Product name	1-Ethyl-4-Isobutylbenzene
Catalogue No.	VQ-031130
CAS Number	100319-40-2
IUPAC name	1-ethyl-4-(2-methylpropyl)benzene
Molecular formula	C₁₂H₁₈
Molecular weight	162.27 g/mol
Exact mass	162.1409
Grade	Reference Standard
HSN code	38229090
InChIKey	FMHWAAZOTFVMKR-UHFFFAOYSA-N
SMILES	CCC1=CC=C(C=C1)CC(C)C
PubChem CID	576929

Physical properties
Physical form	Solid
LogP (XLogP3)	4.3
H-bond donors / acceptors	0 / 0
TPSA	0 Å²

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed

Precautionary statements: P264, P270, P301 + P317, P330, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of 1-Ethyl-4-Isobutylbenzene?

The CAS Registry Number of 1-Ethyl-4-Isobutylbenzene is 100319-40-2. It is also known as p-Isobutylethylbenzene, Benzene, 1-ethyl-4-(2-methylpropyl)-, 1-(4'-Isobutylphenyl)ethane.

What is the molecular formula and molecular weight of 1-Ethyl-4-Isobutylbenzene?

1-Ethyl-4-Isobutylbenzene has the molecular formula C12H18 and a molecular weight of 162.27 g/mol. Its IUPAC name is 1-ethyl-4-(2-methylpropyl)benzene.

What is 1-Ethyl-4-Isobutylbenzene used for?

1-Ethyl-4-Isobutylbenzene is supplied as a characterised reference material related to Ibuprofen. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of 1-Ethyl-4-Isobutylbenzene can I order?

We supply 1-Ethyl-4-Isobutylbenzene in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 1-Ethyl-4-Isobutylbenzene?

Yes. Every lot of 1-Ethyl-4-Isobutylbenzene is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can 1-Ethyl-4-Isobutylbenzene be shipped internationally?

Yes. 1-Ethyl-4-Isobutylbenzene is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.